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The unique identifier assigned to an individual within a Matchgrid is called the Reference Identifier. Match supports two methods for assigning reference identifiersReference Identifiers:
- Sequence: An incrementing integer, equivalent to a database SERIAL
- Sequences must be assigned a starting number. Reference Identifiers created by this method are not padded, so to generate (for example) 8 digit identifiers, set the starting number to 10000000.
- Sequences may optionally be assigned a prefix string, such as
MRID. This will result in Reference Identifiers such asMRID1001(depending on what the starting number is.)
- UUID (Type 4)
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| If the Reference Identifier assignment method is changed, existing identifiers will not be affected. The new configuration will only be applied to newly assigned Reference Identifiers. |
When the Matchgrid is built (after the Matchgrid attributes and rules are defined), a new database table will be created using the name of the Matchgrid, prefixed with mg_.